Home / 13,381.80-18,464.22-8,076.90

Finding the Fourth Proportional to 13,381.80, 18,464.22 and 8,076.90

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Solution

The fourth proportional to 13,381.80, 18,464.22 and 8,076.90 is: 11,144.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.80 : 18,464.22 = 8,076.90 : x
  2. Step 2: Convert to fraction form
    13,381.80/18,464.22 = 8,076.90/x
  3. Step 3: Cross multiply
    13,381.80x = 18,464.22 × 8,076.90
  4. Step 4: Simplify right side
    13,381.80x = 149,133,658.52
  5. Step 5: Solve for x
    x = 149,133,658.52/13,381.80
  6. Step 6: Final answer
    x = 11,144.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.